>>37001
I fell a bit uncomfortable about discussing it in this thread as I don't want to sound it as some complaint. Whatever Eros wants it to be it is fine.

But by their looks and expressions they don't feel any pain at all
I think in this situation more appropriate facial expression would be something like surprise/ahegao as something what you feel while riding roller coaster. or when you eat very spicy food which is uncomfortable but also exciting.

Also current expression of those girls also can be seen as a form of smug face where they are like saying to the sadist "you need to do a bit harder than that "